How to Repair Fiat 500 Keys There are several reasons your Fiat 500 key FOB may not function properly. One of the most frequent is the small "watch" battery that's inside it dies. This is a 3.3-volt lithium CR2032 and you can purchase it anywhere for less than $3. When you need a new key for an older Fiat model, a locksmith is the one to call. United Locksmith offers this service, and has all the tools and spare parts needed. Keys On the outside, a Fiat key may seem basic however inside the case is an electronic chip that communicates with your vehicle's immobiliser system. If the chip isn't present or programmed to the immobiliser system in a correct manner then your vehicle won't start. Car Keys Solutions can offer you dealer-standard equipment and technology to repair your Fiat key, even if the key is damaged or lost. A spare key is the most efficient way to keep your car running in the event of a catastrophe or being locked out. We can supply you with a standard key or remote fob. We use only the highest-quality blanks available and offer an immediate turnaround time so that you get back on the road in a hurry. A few people choose to go to a Fiat Dealership when they need a new key, but we can provide a more affordable and quicker service. We can also come to your location, saving you the cost of towing your car to the dealer. This can also decrease the waiting time which can be as long as 10 days for dealers. Remotes The remote controls on Fiat vehicles are like keys, however they have an IR LED (infrared). This LED sends an electronic signal to the device which opens or turns off the vehicle when it is pressed. The microprocessor inside a key converts the signal into a code, which is then sent to device. This is referred to as "keyless entry". The more modern your car is, the more likely you are to have an electronic keypad. The more modern your car is, the more features you'll likely have. https://www.thekeylab.co.uk/fiat-car-keys/ includes everything from locking and unlocking the car with a button press, to opening the doors without having to actually touch the door handle and many more. The key fob has an integrated circuit chip that connects to the immobiliser system of the car. The system is able to determine whether the key is genuine by checking a certain sequence in the transponder. If the chip is not present, or has not been programmed to the correct immobiliser system, the vehicle won't start. A locksmith can replace the key fob if it's damaged. They'll also need to program the new key to be synced with the vehicle's immobiliser. This is an essential part of the procedure, and you must be prepared to provide details regarding your vehicle to your locksmith when they call you. Keyless Entry With the keyless entry option on your Fiat 500 you can lock or unlock your car at the touch of a button. This technology is becoming more common in all types of cars that adds convenience and security to the use of your car. Check to see if the remote keyless entry system isn't working. The coin battery inside the fob could be depleted. If the battery has been drained, replace it with a new one that is of the same size, voltage and type as the original. Also, make sure that the battery contacts are free of corrosion or dust. The key fob has rubber seals to protect the chip inside from water, however, prolonged exposure to salty or soapy water may cause the chip to fail. If your key fob has been exposed to water, take it off and allow the battery to dry completely before replacing it. You can also clean the electronic chip with isopropyl or electronic cleaner. While some people may believe that keyless entry is less secure, the system is actually more secure than conventional systems due to the code used to unlock your car is rolled away after each use. This means that even if hackers do intercept the signal that they receive, they will not be able to gain access to your vehicle. Transponders Fiat uses a crypto key transponder system this means that keys/transponders must be precoded by the Body Control Module before they are "programmed" by the BCM. A blank key that is not programmed can't be done because the BCM must read and write its secret key onto the transponder before locking it. This is referred to as"cloning. These are brand new replacement outer case SIP22 transponder keys for your Fiat 500. They contain a chip that opens the door and begins the vehicle. They will need to be professionally cut by a locksmith to match your ignition.